CA1117870A - Paire de protege-tympans et methode de fabrication - Google Patents

Paire de protege-tympans et methode de fabrication

Info

Publication number: CA1117870A
Authority: CA; Canada
Prior art keywords: cord; foam; earplugs; earplug; construction
Prior art date: 1978-04-28
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA000325389A

Other languages

English (en)

Inventor

Albert R. Wacker

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

E-A-R Corp

Original Assignee

E-A-R Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1978-04-28

Filing date

1979-04-11

Publication date

1982-02-09

1979-04-11 Application filed by E-A-R Corp filed Critical E-A-R Corp

1982-02-09 Application granted granted Critical

1982-02-09 Publication of CA1117870A publication Critical patent/CA1117870A/fr

Status Expired legal-status Critical Current

Links

238000010276 construction Methods 0.000 title claims abstract description 30
238000000034 method Methods 0.000 title claims description 12
238000004519 manufacturing process Methods 0.000 title description 2
229920001169 thermoplastic Polymers 0.000 claims abstract description 24
239000006260 foam Substances 0.000 claims abstract description 22
239000004416 thermosoftening plastic Substances 0.000 claims abstract description 22
238000003466 welding Methods 0.000 claims abstract description 8
239000006261 foam material Substances 0.000 claims description 11
239000012815 thermoplastic material Substances 0.000 claims description 9
BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 8
229920001577 copolymer Polymers 0.000 claims description 6
238000007906 compression Methods 0.000 claims description 4
230000006835 compression Effects 0.000 claims description 4
229920001519 homopolymer Polymers 0.000 claims description 4
239000004014 plasticizer Substances 0.000 claims description 4
238000001816 cooling Methods 0.000 claims description 3
230000004907 flux Effects 0.000 claims description 2
238000011084 recovery Methods 0.000 claims description 2
239000007787 solid Substances 0.000 claims description 2
239000000463 material Substances 0.000 description 9
229920000915 polyvinyl chloride Polymers 0.000 description 4
239000004800 polyvinyl chloride Substances 0.000 description 4
229910052729 chemical element Inorganic materials 0.000 description 3
150000002148 esters Chemical class 0.000 description 3
230000001012 protector Effects 0.000 description 3
238000007789 sealing Methods 0.000 description 3
KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
150000001735 carboxylic acids Chemical class 0.000 description 2
210000000613 ear canal Anatomy 0.000 description 2
230000000694 effects Effects 0.000 description 2
239000000203 mixture Substances 0.000 description 2
229920003023 plastic Polymers 0.000 description 2
239000004033 plastic Substances 0.000 description 2
229920000642 polymer Polymers 0.000 description 2
125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
WWYNJERNGUHSAO-XUDSTZEESA-N (+)-Norgestrel Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 WWYNJERNGUHSAO-XUDSTZEESA-N 0.000 description 1
IZMZREOTRMMCCB-UHFFFAOYSA-N 1,4-dichloro-2-ethenylbenzene Chemical compound ClC1=CC=C(Cl)C(C=C)=C1 IZMZREOTRMMCCB-UHFFFAOYSA-N 0.000 description 1
PGRNEGLBSNLPNP-UHFFFAOYSA-N 1,6-dichloro-3-methylhex-1-ene Chemical compound ClC=CC(C)CCCCl PGRNEGLBSNLPNP-UHFFFAOYSA-N 0.000 description 1
KTZVZZJJVJQZHV-UHFFFAOYSA-N 1-chloro-4-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C=C1 KTZVZZJJVJQZHV-UHFFFAOYSA-N 0.000 description 1
IGGDKDTUCAWDAN-UHFFFAOYSA-N 1-vinylnaphthalene Chemical compound C1=CC=C2C(C=C)=CC=CC2=C1 IGGDKDTUCAWDAN-UHFFFAOYSA-N 0.000 description 1
OMNYXCUDBQKCMU-UHFFFAOYSA-N 2,4-dichloro-1-ethenylbenzene Chemical compound ClC1=CC=C(C=C)C(Cl)=C1 OMNYXCUDBQKCMU-UHFFFAOYSA-N 0.000 description 1
OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
ISRGONDNXBCDBM-UHFFFAOYSA-N 2-chlorostyrene Chemical compound ClC1=CC=CC=C1C=C ISRGONDNXBCDBM-UHFFFAOYSA-N 0.000 description 1
125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 description 1
CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
229920012485 Plasticized Polyvinyl chloride Polymers 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
239000002253 acid Substances 0.000 description 1
150000007513 acids Chemical class 0.000 description 1
-1 acrylic acid nitrile Chemical class 0.000 description 1
125000005250 alkyl acrylate group Chemical group 0.000 description 1
150000001408 amides Chemical class 0.000 description 1
150000001491 aromatic compounds Chemical class 0.000 description 1
230000004888 barrier function Effects 0.000 description 1
230000005540 biological transmission Effects 0.000 description 1
CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
210000004027 cell Anatomy 0.000 description 1
229920002301 cellulose acetate Polymers 0.000 description 1
YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 description 1
238000013016 damping Methods 0.000 description 1
150000001993 dienes Chemical class 0.000 description 1
125000005442 diisocyanate group Chemical group 0.000 description 1
239000013536 elastomeric material Substances 0.000 description 1
MEGHWIAOTJPCHQ-UHFFFAOYSA-N ethenyl butanoate Chemical compound CCCC(=O)OC=C MEGHWIAOTJPCHQ-UHFFFAOYSA-N 0.000 description 1
UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
238000009472 formulation Methods 0.000 description 1
235000011087 fumaric acid Nutrition 0.000 description 1
150000002238 fumaric acids Chemical class 0.000 description 1
230000004927 fusion Effects 0.000 description 1
125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
238000003780 insertion Methods 0.000 description 1
230000037431 insertion Effects 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
229910052742 iron Inorganic materials 0.000 description 1
125000005394 methallyl group Chemical group 0.000 description 1
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
239000000178 monomer Substances 0.000 description 1
125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
BPCNEKWROYSOLT-UHFFFAOYSA-N n-phenylprop-2-enamide Chemical compound C=CC(=O)NC1=CC=CC=C1 BPCNEKWROYSOLT-UHFFFAOYSA-N 0.000 description 1
150000002825 nitriles Chemical class 0.000 description 1
125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
239000002984 plastic foam Substances 0.000 description 1
229920002635 polyurethane Polymers 0.000 description 1
239000004814 polyurethane Substances 0.000 description 1
239000011148 porous material Substances 0.000 description 1
QTECDUFMBMSHKR-UHFFFAOYSA-N prop-2-enyl prop-2-enoate Chemical compound C=CCOC(=O)C=C QTECDUFMBMSHKR-UHFFFAOYSA-N 0.000 description 1
230000004224 protection Effects 0.000 description 1
239000010959 steel Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1
238000009827 uniform distribution Methods 0.000 description 1
210000003934 vacuole Anatomy 0.000 description 1
KOZCZZVUFDCZGG-UHFFFAOYSA-N vinyl benzoate Chemical compound C=COC(=O)C1=CC=CC=C1 KOZCZZVUFDCZGG-UHFFFAOYSA-N 0.000 description 1
229920001567 vinyl ester resin Polymers 0.000 description 1
125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/69—General aspects of joining filaments
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A61F11/10—Protective devices for the ears internal, e.g. earplugs inflatable or expandable
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/06—Protective devices for the ears
- A61F11/08—Protective devices for the ears internal, e.g. earplugs
- A61F11/12—External mounting means
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/526—Joining bars
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
- B29K2001/08—Cellulose derivatives
- B29K2001/12—Cellulose acetate
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor

Landscapes

Health & Medical Sciences (AREA)
Engineering & Computer Science (AREA)
Life Sciences & Earth Sciences (AREA)
Mechanical Engineering (AREA)
Otolaryngology (AREA)
Public Health (AREA)
Psychology (AREA)
Biophysics (AREA)
Biomedical Technology (AREA)
Heart & Thoracic Surgery (AREA)
Vascular Medicine (AREA)
Animal Behavior & Ethology (AREA)
General Health & Medical Sciences (AREA)
Physics & Mathematics (AREA)
Veterinary Medicine (AREA)
Acoustics & Sound (AREA)
Lining Or Joining Of Plastics Or The Like (AREA)
Laminated Bodies (AREA)
Orthopedics, Nursing, And Contraception (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Nitrogen Condensed Heterocyclic Rings (AREA)

CA000325389A 1978-04-28 1979-04-11 Paire de protege-tympans et methode de fabrication Expired CA1117870A (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US05/900,982 US4193396A (en)	1978-04-28	1978-04-28	Paired earplug construction
US900,982		1978-04-28

Publications (1)

Publication Number	Publication Date
CA1117870A true CA1117870A (fr)	1982-02-09

Family

ID=25413405

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000325389A Expired CA1117870A (fr)	1978-04-28	1979-04-11	Paire de protege-tympans et methode de fabrication

Country Status (18)

Country	Link
US (1)	US4193396A (fr)
JP (1)	JPS54144099A (fr)
AU (1)	AU527321B2 (fr)
BE (1)	BE875941A (fr)
CA (1)	CA1117870A (fr)
CH (1)	CH629955A5 (fr)
DD (1)	DD143208A5 (fr)
DE (1)	DE2915832C2 (fr)
DK (1)	DK156812C (fr)
FR (1)	FR2424020A1 (fr)
GB (1)	GB2019224B (fr)
HK (1)	HK16284A (fr)
IT (2)	IT7953198V0 (fr)
MX (1)	MX146059A (fr)
NL (1)	NL185059C (fr)
NO (2)	NO148056C (fr)
SE (1)	SE440023C (fr)
ZA (1)	ZA79910B (fr)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2506482A1 (fr) *	1981-05-19	1982-11-26	Bada Alain	Sceau en matiere plastique et son procede de fabrication
US4724922A (en) *	1986-07-24	1988-02-16	Kalayjian Robert W	Acoustic earpiece
US4916758A (en) *	1988-07-01	1990-04-17	Jordan Ross Erma	Disposable full ear protector for beautician use
US4896679A (en) *	1989-05-22	1990-01-30	St Pierre Carol L	Method and apparatus for the exclusion of sound and water from the auditory canal
US5203352A (en) *	1990-10-16	1993-04-20	Cabot Safety Corporation	Polymeric foam earplug
US5153387A (en) *	1990-12-31	1992-10-06	Syracuse University	Layered earplug
JPH0568654A (ja) *	1991-09-12	1993-03-23	Hideki Fukuzaki	枚葉状シートからなる連接取出し用シート
US5601594A (en) *	1995-09-14	1997-02-11	Best; Barry D.	Nasal stent
US5668354A (en) *	1995-11-02	1997-09-16	Cabot Safety Intermediate Corporation	Earplug assembly and eyewear assembly
USD410079S (en)	1996-08-15	1999-05-18	Cabot Safety Intermediate Corpoation	Hearing protective device
US5809574A (en) *	1996-08-15	1998-09-22	Cabot Safety Intermediate Corporation	Hearing protection device
US5833367A (en) *	1996-11-12	1998-11-10	Trutek, Inc.	Tympanic thermometer probe cover
US6030117A (en) *	1996-11-12	2000-02-29	Trutek, Inc.	Tympanic thermometer probe cover
US5749373A (en) *	1997-04-10	1998-05-12	Moldex-Metric, Inc.	Headband with break-away cord attachment
US6001066A (en) *	1997-06-03	1999-12-14	Trutek, Inc.	Tympanic thermometer with modular sensing probe
USD406341S (en) *	1997-07-24	1999-03-02	Stefano James M	Tongue cleaner
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1978
- 1978-04-28 US US05/900,982 patent/US4193396A/en not_active Expired - Lifetime
1979
- 1979-02-26 ZA ZA79910A patent/ZA79910B/xx unknown
- 1979-02-28 MX MX176755A patent/MX146059A/es unknown
- 1979-04-06 GB GB7912179A patent/GB2019224B/en not_active Expired
- 1979-04-11 CA CA000325389A patent/CA1117870A/fr not_active Expired
- 1979-04-17 SE SE7903335A patent/SE440023C/sv not_active IP Right Cessation
- 1979-04-19 DE DE2915832A patent/DE2915832C2/de not_active Expired
- 1979-04-20 NL NLAANVRAGE7903127,A patent/NL185059C/xx not_active IP Right Cessation
- 1979-04-20 CH CH375379A patent/CH629955A5/fr not_active IP Right Cessation
- 1979-04-20 JP JP4889479A patent/JPS54144099A/ja active Granted
- 1979-04-23 IT IT7953198U patent/IT7953198V0/it unknown
- 1979-04-23 DD DD79212423A patent/DD143208A5/de not_active IP Right Cessation
- 1979-04-23 IT IT67847/79A patent/IT1118590B/it active
- 1979-04-27 BE BE0/194910A patent/BE875941A/fr not_active IP Right Cessation
- 1979-04-27 FR FR7910765A patent/FR2424020A1/fr active Granted
- 1979-04-27 NO NO791411A patent/NO148056C/no unknown
- 1979-04-27 DK DK174879A patent/DK156812C/da not_active IP Right Cessation
- 1979-04-27 AU AU46554/79A patent/AU527321B2/en not_active Expired
1982
- 1982-09-06 NO NO823007A patent/NO823007L/no unknown
1984
- 1984-02-23 HK HK162/84A patent/HK16284A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
NO823007L (no)	1979-10-30
IT1118590B (it)	1986-03-03
AU4655479A (en)	1979-11-01
NO148056C (no)	1983-08-03
NO148056B (no)	1983-04-25
SE440023C (sv)	1988-12-12
DD143208A5 (de)	1980-08-13
GB2019224A (en)	1979-10-31
AU527321B2 (en)	1983-02-24
GB2019224B (en)	1982-11-03
SE440023B (sv)	1985-07-15
US4193396A (en)	1980-03-18
NL185059C (nl)	1990-01-16
MX146059A (es)	1982-05-07
FR2424020B1 (fr)	1985-04-19
IT7967847A0 (it)	1979-04-23
NO791411L (no)	1979-10-30
JPS54144099A (en)	1979-11-09
CH629955A5 (fr)	1982-05-28
HK16284A (en)	1984-03-02
IT7953198V0 (it)	1979-04-23
DK174879A (da)	1979-10-29
ZA79910B (en)	1980-02-27
DE2915832A1 (de)	1979-11-08
BE875941A (fr)	1979-08-16
FR2424020A1 (fr)	1979-11-23
NL7903127A (nl)	1979-10-30
SE7903335L (sv)	1979-10-29
NL185059B (nl)	1989-08-16
DK156812B (da)	1989-10-09
DE2915832C2 (de)	1985-03-28
JPS6340102B2 (fr)	1988-08-09
DK156812C (da)	1990-02-26

Legal Events

Date	Code	Title	Description
1999-02-09	MKEX	Expiry

Publication	Publication Date	Title
CA1117870A (fr)	1982-02-09	Paire de protege-tympans et methode de fabrication
EP0870487B1 (fr)	2004-06-30	Ressort de tête avec cordon de fixation détachable
US4293355A (en)	1981-10-06	Method for ultrasonically welding plasticized thermoplastic polymeric foam wares
USRE29487E (en)	1977-12-06	Earplugs
EP1079777B1 (fr)	2006-01-04	Protecteur d'oreille
EP0862397B1 (fr)	2004-12-22	Protecteur auriculaire contenant une mousse et un composant poreux et procede de fabrication correspondant
JP6877602B2 (ja)	2021-05-26	先端空洞付き耳栓及びその製造方法
US4253452A (en)	1981-03-03	Ear plug assembly
CN101904783B (zh)	2013-09-18	高声音衰减效果的听力保护装置
FI79771C (fi)	1990-02-12	Ledad faestkonstruktion mellan hoerlurskudden och huvudbandet.
US4261432A (en)	1981-04-14	Airline earphone structure
US7731487B2 (en)	2010-06-08	Mold for forming a hearing protective device
CN211959479U (zh)	2020-11-17	一种抗干扰能力强的音乐耳机
CA2234163C (fr)	2007-04-10	Protecteur auriculaire contenant une mousse et un composant poreux et procede de fabrication correspondant
AU2003231322B2 (en)	2005-05-26	Hearing protective device comprising a foam and a porous component, and method of manufacture thereof
KR101086390B1 (ko)	2011-11-23	방한용 귀마개
MXPA98002915A (en)	1998-11-12	Hearing protective device comprising a foam and a porous component, and method of manufacture thereof
JPH0811216A (ja)	1996-01-16	合成樹脂成形品の部材接合方法